Big Block Main Bolt & Oil Pan Bolt Hole Location Blueprint

OLDSTYLE said
The hard part is getting the eight longer main studs needed, 440 source has them at 16.95 ea

Personally I wouldn't use any hardware that 440 Source sells in my engines. ARP has any size stud available that one could ask for. Their catalog doesn't even cover 25% of the items they actually have available if you call them.

Tom